Merge pull request #14 from aberndsen/unify_dr

Unify dr
PEP8 on reduce_data.py (gets rid of the pink in my emacs session)
Use astropy.extern.configobj
PEP8 for observations.py, fold.py, filehandles.py
Correct factor 2 bug in GMRTdata.ntimebins (plus minor cleanup)
Setup that gives simultaneous profiles -- aro time0 needs to be checked!